/Engine/Source/Editor/UnrealEd/Public/EditorModeRegistry.h
struct FEditorModeFactory : public [IEditorModeFactory](API\Editor\UnrealEd\IEditorModeFactory)
FEditorModeFact...
FactoryCallback
Callback used to create an instance of this mode type
FEditorModeInfo
ModeInfo
Information pertaining to this factory's mode